Question: Who are the sons of Maximilian I, Holy Roman Emperor, who died on 1557-5-4?
Paraphrase: Who are the children of Maximilian I, Sacred Roman Head, who kicked the bucket on 1557-5-4?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q150726 wdt:P40 ?answer . ?answer wdt:P570 ?x FILTER(contains(YEAR(?x),'1557'))}
Answer: George of Austria, Leopoldo de Austria